Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01d87f0a37a320b…

MALICIOUS

PDF

52.4 KB Created: 2020-08-03 02:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5be110dd953e027f83c80596ca0705c6 SHA-1: e0f798e2af5321d0e80adace5e506dcd4ee237aa SHA-256: a01d87f0a37a320b78beb04fa1fd6616e3dbdae86eecd8f47013ee26d84ff3db
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one heuristic specifically flagging it as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=sanborn+air+compressor', is identified as a malicious redirector. The document body appears to be corrupted or heavily obfuscated, but the presence of numerous external links suggests an attempt to manipulate search engine results or redirect users to malicious content. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=sanborn+air+compressor
    • http://files.thehumanempathyproject.com/uploads/1/3/1/3/131380485/8868057.pdf
    • http://files.brianabrahamactor.com/uploads/1/3/2/7/132740865/miwutimelafutopexor.pdf
    • http://files.iamauthorsonjarhodes.com/uploads/1/3/1/4/131407572/a8b5070c.pdf
    • https://cdn.shopify.com/s/files/1/0438/2513/5776/files/tupaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/16235641286.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/58894519355.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/bewezeger.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96617946950.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/vazugupejit.pdf
    • https://cdn.shopify.com/s/files/1/0436/4707/4464/files/2004_honda_pilot_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/jomezexisebejatinivebup.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/xenophage_quest_destiny_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/kipedo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006722.bin
efe3d81ee9b7144c950794a35cb820be5e7071f65fba12d2240f797800e2c3e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6722 11348 bytes
font_01_sfnt_off00008c62.bin
1f478afa5c78a19f0b4cc62bda9cf008d374c2e1f6598ab57a42a18ce5c89a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C62 5288 bytes
font_02_sfnt_off00009e42.bin
fe9acd3ae0939a43d88080a43aff98f4dda814dadc4b88c4190e8e4432681cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E42 11600 bytes

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